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    <title></title>
    <link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
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        <h1>极客学院<small>欢迎您！</small></h1>
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            <a href="#" class="thumbnail">
                <img src="bootstrap/img/mm.jpg">

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        <div class="col-xs-6 col-md-3">
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                <img src="bootstrap/img/mm.jpg">
                <div class="caption">
                    <h3>这是一个美女哦</h3>
                    <p>我知道你们都是喜欢看美女的。因为美女养眼啊！！</p>
                    <p>
                        <a href="#" class="btn btn-primary" role="button">不好看</a>
                        <a href="#" class="btn btn-default" role="button">选我哦</a>
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